New timing chain noise

Since the inception of the internal combustion engine, one constant has remained — all of them have a timing chain or timing belt. Most higher-displacement engines have a timing chain as opposed to a timing belt. The chain is located in the front of the motor and is attached to a set of gears and pulleys that power multiple mechanical components, including the crankshaft and camshaft. In order for your engine to fire, the timing chain must smoothly rotate around the gears without hesitation.

Although the timing chain is made out of metal, it is subject to wear and tear and may break if not replaced as recommended by the manufacturer. The timing chain is comprised of a series of links in the chain — similar to those found on a bicycle chain. The links move on the toothed sprockets which are located on the ends of the crankshaft and camshaft and are responsible for opening and closing valves in the cylinder head and moving pistons and connecting rods in the combustion chamber.

The timing chain can start to stretch and wear over time, which will cause the engine's timing to be inaccurate and produce a few warning signs. Listed below are 5 of the symptoms of a worn out timing chain. If you notice any of these warning signs, it's advised you contact a local mechanic as soon as possible to diagnose the exact cause and make appropriate repairs as needed. There are two ways to achieve valve timing in a combustion engine. The first is the two-gear method, which includes the crankshaft to camshaft gear direct connection.

This is the method used in most types of heavy equipment and big trucks. The timing chain method is more common with consumer vehicles and high-performance engines. Over a period of time, the timing chain can stretch, which can cause the chain to skip a gear on the cam or crankshaft.

The engine may also run poorly and lack accelerating power. If this situation occurs, it's likely the timing chain is damaged and needs to be replaced as soon as possible.

new timing chain noise

If the timing chain breaks, the loose metal rolling around inside the motor can lead to serious engine damage. It's recommended by all automotive manufacturers to change the engine oil and filter every 3, to 5, miles.

Over time, oil begins to separate as it heats up and is exposed to natural solvents found in gasoline. If the timing chain begins to wear out, small metal pieces can break off the chain and find their way into the oil pan.

When you have your oil changed, and the mechanic tells you there were small pieces of metal inside the oil as it drained or in the filter, it's a good indication that your timing chain is beginning to fail.

Metal shavings are also commonly seen when there is extensive wear of cylinder head valves, keepers, retainers and other cylinder head hardware. A broken timing chain will cause an engine to not start or fail while driving. If it breaks or jumps while driving, the pistons will be damaged from contact with the valves.

The valves themselves will bend and potentially ruin the engine. The check engine light can illuminate for a variety of reasons, one of which could be a failing timing chain. The check engine light may turn on when the onboard computer detects something wrong with the emissions system and engine operation.

A stretched timing chain contributes to poor engine performance and increased emissions, triggering the check engine light and the storing of a diagnostic trouble code. A mechanic will need to inspect the code and prescribe the necessary repairs.

Unusual sounds are also a common warning sign of a problem inside your motor. Under normal conditions, the engine should have a consistent, smooth sound indicating everything is running as it should. However, when the timing chain is loose, it may cause a vibration inside the motor and that will produce a rattling noise as the engine idles. Anytime you hear a rattle it means something is loose and needs to be fixed before it breaks.

The timing chain is an integral part of any engine, and without it, your vehicle is rendered useless. If the timing chain breaks while you are driving, serious damage to your vehicle's engine is probable.On most GM vehicles with V-8 or V-6 engines, a metal timing chain is used to connect the camshaft to the crankshaft. This causes the camshaft to move in synchronization with the crank, causing the camshaft to open and close the valves in the proper sequence and duration for the intake, power stroke and exhaust cycle.

new timing chain noise

Because of this, pronounced slack in the timing chain can have a direct effect on the performance and fuel economy of the engine. A worn timing chain introduces slack into the connection between the camshaft and the crankshaft. This causes the valves to open and close later than normal, resulting in reduced cylinder pressures and uneven firing of the fuel mixture.

Q: the timing chain is making noise at startup what needs to be replaced to fix the problem?

This can be felt as misses and uneven idling. A worn timing chain may cause the cylinders to be unable to fully fill with a fuel and air mixture, reducing the amount of energy they can produce.

This will slow down the response of the engine when the accelerator is depressed, and result in less power. A timing chain that receives sudden damage or extreme wear due to overheating or lack of oil may break teeth off of the drive gears on the camshaft, or jump positions on the gears. This can result in a severe loss of power, very poor idle, and the camshaft and crank becoming so far out of synchronization that the engine will not start. A clattering noise coming from the front of the engine can be caused by a loose timing chain contacting the timing cover, or slapping against the gears on the crank and camshaft.

A timing chain making noise like this is most likely near failure. A loud popping hear under the hood is known as a backfire.

Signs of a Bad GM Timing Chain

A worn timing chain can cause this by allowing the timing of the engine's firing sequence to become so out of sync that the intake valve remains partially open during the power stroke, allowing the ignited fuel mixture to escape through the intake manifold.

A worn timing chain can be diagnosed by using a timing light to observe the relation of the timing marks on the timing cover with the marks on the crankshaft balancer. If the marks move back and forth in relation to each other instead of remaining in a steady position while the engine is running, the timing chain is most likely very worn. This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.

To submit your questions or ideas, or to simply learn more about It Still Works, contact us. Abrupt Performance Change A timing chain that receives sudden damage or extreme wear due to overheating or lack of oil may break teeth off of the drive gears on the camshaft, or jump positions on the gears.

Clattering Noise A clattering noise coming from the front of the engine can be caused by a loose timing chain contacting the timing cover, or slapping against the gears on the crank and camshaft. Backfiring A loud popping hear under the hood is known as a backfire.

Identification A worn timing chain can be diagnosed by using a timing light to observe the relation of the timing marks on the timing cover with the marks on the crankshaft balancer. About the Author This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information.

Photo Credits rusty chain image by Leonid Nyshko from Fotolia.The timing chain is an important component because it keeps the camshaft and crankshaft connected and synchronized as they rotate. There are several pulleys and gears which provide power to the camshaft, crankshaft, and other mechanical components of the system.

The timing of the rotation is extremely important for the engine to function properly. This can only happen if the timing chain rotates smoothly on the gears. If there is any kind of hesitation or resistance in these movements, it could cause problems for the engine.

Related: Timing Chain vs Timing Belt. Timing chains tend to work for a long time, longer than timing belts.


As the timing chain moves, it will generate a noise which may become intolerable as time goes on. The solution may be to replace the timing chain, depending on what the actual cause of the noise is. Sometimes the cause can be directly linked to the chain while other times, it is another component that it is connected to. You need to figure out what the cause is and fix it to get rid of the noise. The most common cause of timing chain noise is when the timing chain is simply wearing out.

All the wear and tear it incurs over the years will diminish its ability to function properly. Those actions will merely extend their lifespan. But eventually, the timing chain will wear out. Noise will be the first sign of this.

Once that happens, your timing chain will wear out faster than normal. In addition to getting your oil changes regularly, you need to use the right kind of oil in your engine too.

You should also choose an oil which has anti-wear additives too.

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Otherwise, if you choose an oil with the wrong viscosity for your engine, it could cause the timing chain to wear faster and make more noise.The Ford Triton timing chain is a complex set up featuring two separate chains. Although I've seen the Ford Triton V-8 withmiles on it, these three valve V-8 engines haven't been exactly trouble-free.

With that said, here we'll focus on the timing chain problem. The engine is the 4. This motor launched in and ran through in the 5. If you could think for a moment about how many engines we're talking about, it's mind blowing.

From through this engine came inside one of the best selling trucks of all time, the F It's hard to say this is a good engine, but it's undeniable they can go a long way when cared for properly. Unfortunately, this engine provides many challenges for owners and drivers.

Here we'll talk about the common symptoms of the Ford Triton timing chain problem. Note: The - Triton uses a different part number kit than the and older ones. Join us as we dive into first design problems with the plastic chain guides and tensioners. We'll even take a look at the cam phaser gears known for creating a knocking sound at idle. These malfunctioning cam phasers also set a variety of check engine light trouble codes.

There are a bunch of separate things that can go wrong with the Ford Triton timing chain system. Each one of these failures carries a different set of symptoms. However, we can group a bunch of the symptoms together to help us understand if our complaints point to a timing issue.

We'll get into exactly what goes wrong with this particular set up on the Ford Triton engines in the next section. With that said, many of the symptoms associated with a handful of the problems turn into noisy operation complaints.

The engines often make a lot of noise at idle when hot or a rattling sound on cold engine startup. Both of these issues can point to problems with the tension on the chain and the condition of the guide assemblies.

Timing chain noise problem

Here's the best way to verify the engine noise you're hearing is from the timing chain. Use a professional mechanic stethoscope. In addition, to the knocking noise complaints as a result of incorrect tension or broken plastic guides we can also set a fair amount of check engine light codes.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

Bicycles Stack Exchange is a question and answer site for people who build and repair bicycles, people who train cycling, or commute on bicycles. It only takes a minute to sign up. I ride an SE Lager fixed. On the 30th of May this year I did a bit of an overhaul, replacing the rear cog, chain, wheels, tyres and brake pads. I measured the chain last weekend and discovered that it was already over.

The chainring is also not old and looks to be in fine condition. Here is a photo showing the old cog on the left and a brand new cog on the right. I couldn't see any appreciable difference which I took as reinforcing my decision that it didn't need replacing.

Unfortunately the next day I went for a ride the drivetrain was incredibly noisy. Clunking and grinding. I could even feel roughness through the pedals. I was thinking maybe the bottom bracket the only drivetrain component that has not been replaced yet might have completely fallen apart. What is causing this noise? Fair warning: I have the answer to this question that I will post shortly. According to my researchasking and answering a question is encouraged as a source of information.

Update: I should clarify that I don't have the answer to the question. I know how I fixed it, but that doesn't preclude another answer being more informative. Fixed gears don't have as much tolerance for mismatched wear patterns as geared bikes, because there is no "give" in the drive train system.

The small amount of wear shown on the used cog is enough to cause this kind of noise in the case of a fixie. I'd be surprised if the same amount of wear caused you any problems at all on a geared machine. It's also possible that the chain was over tensioned. I know you said that you use a tensioner, and that you didn't change the settings, but you used a new, unstretched, and therefore shorter chain. You may have needed to relax the tension by a small amount. As you removed the wheel to change the cog, It may be that the tension has changed as well.

Hard to say for certain, as you made the noise go away. Normally I'd suspect hooking, on a worn cog. But though there is some barely perceptible hooking on that "worn" cog, it's not nearly enough to cause a problem. So I'm going to go with the yucky color of that chain. The bike is rejecting it! Or perhaps the chain is just too wide. It turns out the rear cog was making the noise. I replaced the cog as soon as I got home and everything is running silently again.

I guess there's also an off chance that I had something badly adjusted, but I use a chain tug and didn't change the setting so I don't think the chain tension would have changed. Sign up to join this community. The best answers are voted up and rise to the top. Home Questions Tags Users Unanswered. Why is my drivetrain so noisy after replacing the chain?

Ask Question.By BestyBlue77November 4, in Engine.

Timing Belt Unusual Noise (Excessive Noise)

Hey guys! I have B It's an Automatic. The top engine has been freshly rebuilt. It idled and ran great before I put the new timing chain on.

new timing chain noise

It still runs fine, but is making a noise coming from the timing cover area. I couldn't for the life of me get the darn thing to line up on TDC of 1. It would only line up on 2.

Is that normal for this car? I just want to make sure I didn't screw anything up. I'm very meticulous and follow my Chilton to the T. Any ideas about what the noise might be? And is it dangerous to drive it like this? I haven't been driving it to be on the safe side. I just spent the last 2 months restoring this puppy.

new timing chain noise

Don't want to eff it up. Yes, I put the whole new kit in. How do I reset the cam timing?

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All I know is that the timing was off 9 degrees that's how much slack it had in the chain when I tested it using the rotor method. Datzenmike, Ya, I did that. But in the Chilton manual it said to make sure the engine was at TDC of 1 cylinder, and as I turned the cam by hand it would forcefully pull itself into place in exactly 4 distinct places as I was turning it. I'm assuming one pull for each cylinder.

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And fit the cam dowel to the number two hole in the sprocket. If the dowel doesn't line up turn the cam till it does. To check the stretch the side opposite the tensioner must not have any slack in it. To get this, turn engine clockwise up to TDC and stop. Chain is tight on the tension side, now check the sprocket position. If chain has stretched, sprocket will be slightly counter clockwise from where it should be. I'll give that a try. I was looking at some advice that said I could possibly change the cam timing by adjusting the distributor.

Either way looks like I'm taking that sucker apart again. Just sucks cause I'm working outside on my back in the cold, and re-torqueing all the oil pan bolts to 4 ft.

Will let ya know if I figure it out. Thanks so much! You cannot change the cam timing with the distributor! Remove the front cover, remove the rocker shaft on top of the head. That will take ALL the pressure off the valve springs so you can adjust the cam timing.Just had my vehicle into a Ford dealership had the timing chain intention replaced and less than miles later its making the same no is that start up after about to 3 hours of sitting there.

What needs to be replaced to fix that issue? There are many reports about this issue with your truck. Which is a very, very large job. Timing chain rattle on start up is a common issue across all manufacturers.

Some are worse than others. The best advice I can give you with the present state of your truck is to make sure the oil is changed as soon as the oil gets dirty. Not by mileage or time, but my pulling the dipstick and seeing if it is dirty in comparison to new oil. If it is, change it. Since your truck hasmiles on it, there have already been a few oil changes. I know manufacturers are recommending longer than usual oil changes and this could be contributing to this issue.

At this point I recommend running a can of sea foam in your oil with each oil change. Dirty oil can lodge debris in the tensioner that will keep the check valve open bleeding off oil pressure. Dirty oil will also contribute to excessive wear of the timing chain guides. There maybe be a design flaw in the tensioners that no one has figured out just yet.

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If this only occurs during start up, it probably is more of an annoyance than a problem that will cause more problems. At this point it seems this is an issue the industry has yet to figure out. I recommend talking to several different repair shops to see if anyone has a convincing fix for this. Their design is similar. Q: the timing chain is making noise at startup what needs to be replaced to fix the problem?

My car has miles. My car has an automatic transmission. Robert Kulp Automotive Mechanic. Thank Robert. Was this answer helpful? Thank you for your feedback! Sorry about that. Why wasn't this information helpful? Recommended Services. The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details. Related Questions.

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